skip transfer cache for credentialed requests and uncacheable request/responses#69017
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SkyZeroZx wants to merge 3 commits into
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skip transfer cache for credentialed requests and uncacheable request/responses#69017SkyZeroZx wants to merge 3 commits into
SkyZeroZx wants to merge 3 commits into
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Treat HttpClient requests using `credentials: 'include'` and `same-origin` as credentialed when deciding whether a response can be stored in the HTTP transfer cache. The transfer cache already skips requests with `withCredentials`, `Cookie`, `Authorization`, or `Proxy-Authorization` because those responses may contain user-specific data. Fetch-backed requests can express the same credentialed behavior through the `credentials` option, so these responses must not be serialized into the SSR HTML. This keeps credentialed SSR responses out of TransferState and aligns the cache eligibility check with the fetch request options supported by HttpClient.
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Do not store HTTP transfer cache entries when either the request or response uses `Cache-Control: no-store`, `Cache-Control: private`, or `Cache-Control: no-cache`. Also skip transfer cache when requests use the Fetch API `cache` option with `no-store` or `no-cache`. Because transfer cache serializes SSR HTTP responses into the rendered HTML, Angular now treats these directives conservatively to avoid exposing sensitive or explicitly uncacheable data through `TransferState`.
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alan-agius4
approved these changes
Jun 1, 2026
| } | ||
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| return cacheControl.split(',').some((directive) => { | ||
| const directiveName = directive.trim().split('=', 1)[0].trim().toLowerCase(); |
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The first trim is redundant.
Suggested change
| const directiveName = directive.trim().split('=', 1)[0].trim().toLowerCase(); | |
| const directiveName = directive..split('=', 1)[0].trim().toLowerCase(); |
alan-agius4
approved these changes
Jun 1, 2026
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@JeanMeche I think the PR would be ready to merge? That way I could also generate the corresponding backports. |
JeanMeche
approved these changes
Jun 2, 2026
This was referenced Jun 2, 2026
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This PR was merged into the repository. The changes were merged into the following branches:
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atscott
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Jun 3, 2026
Do not store HTTP transfer cache entries when either the request or response uses `Cache-Control: no-store`, `Cache-Control: private`, or `Cache-Control: no-cache`. Also skip transfer cache when requests use the Fetch API `cache` option with `no-store` or `no-cache`. Because transfer cache serializes SSR HTTP responses into the rendered HTML, Angular now treats these directives conservatively to avoid exposing sensitive or explicitly uncacheable data through `TransferState`. PR Close #69017
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fix(http): skip transfer cache for fetch credentialed requests
Treat HttpClient requests using
credentials: 'include'andsame-originas credentialed when deciding whether a response can be stored in the HTTP transfer cache.The transfer cache already skips requests with
withCredentials,Cookie,Authorization, orProxy-Authorizationbecause those responses may contain user-specific data. Fetch-backed requests can express the same credentialed behavior through thecredentialsoption, so these responses must not be serialized into the SSR HTML.This keeps credentialed SSR responses out of TransferState and aligns the cache eligibility check with the fetch request options supported by HttpClient.
This can be considered a variant of #67964
fix(http): skip transfer cache for uncacheable HTTP traffic
Do not store HTTP transfer cache entries when either the request or response
uses
Cache-Control: no-store,Cache-Control: private, orCache-Control: no-cache.Also skip transfer cache when requests use the Fetch API
cacheoption withno-storeorno-cache.Because transfer cache serializes SSR HTTP responses into the rendered HTML,
Angular now treats these directives conservatively to avoid exposing sensitive
or explicitly uncacheable data through
TransferState.